Channel-lip-turning machine



Oct. 28. 1924.

G. COLEMAN CHANNEL LIP TURNING MACHINE Filed Mam: 1a 1920 M BR INVENTOR; George Coleman ATTORNEY.

Patented st. 28, 1924.

GEORGE COLEMAN, OF LYNN, MASSACHUSETTS, ASSIGNQR,ASSIGNMENTS, TO THOMAS C. BOWEN, 0F SWAMPSCOTT, MASgACI-IUSETTS,

CHANNEL-LIP-TUBNING T-JIACH INE.

Application filed March 18,1920. Serial No. seavco.

To all whom it may concern: I

Be it known that I, Gnonen COLEMAN, a citizen of the United States, and resident of L nn, in the county of Essex and State of IV assachusetts, have invented a new and chines of the above-designated character- In a copending application by Andrew R.

Ridderstrom, filed Feb. 26, 1920, Serial No. 361,532, assigned to the same assignee asthe present application, there is disclosed a channel-lip-turning machine that is provided with two feed wheels, arranged in side-by-side relation, one of the feed wheels being yieldingly mounted relatively to the other, so that it may yield when pressure is brought to bear upon its periphery by the shank stiffener of a shank-stiffened sole.

feature of the present invention con templates the provision, in a machine of the above-described character, of two feedwheel sections one of which is constituted of yielding material, so that the feed-wheel sections may be rigidly secured together, whereby the construction is simplified and the cost of manufacture reduced; A further ing thereof; Fig. 2 is a sectionalview taken upon the line 22 of Fig. 1, looking 'in the" direction of the arrows, showing the act of turning overand pressing down the lipof a channeled sole; and Fig. 3 is a front elevation of parts of the machine shown in Fig. 1. a I

The machine of the present inventionls provided with a horizontally rotatable wiper 2 that is adapted to open, turn over and press flat a channel lip 4c of a previously channeled sole 6. As the lip 4c is subjected above-described instrumentalities to considerable strain by the wiper, the sole must be firmly gripped to prevent its being pushed bodily out of and away from the I machine. Thedes'ired firm gripping action is effected by a powerfully spring-pressed toothed ffeed wheel 8 that bites deeply into the leather on one face of the sole, and by the wiper'2 and a presser foot 10 acting upon therother face of the sole. As the sole is advanced by. the feed wheel to the wiper, it is guided by an adjustable guide 12 that lies in the sole channel and bears against the 'slioulderof the lip,v and it'is gauged by an adjustable gauge 14. The action of the is well understood by; persons skilled in the art and a fuller description thereof may be found, for example, in a patent to Stanbon, No. 607139, granted July 12, 1898.

The machineof the said patent is ill adapted to the requirements of stifiened soles, such'as the molded outsole shown in the drawings, the shank'of which is stifi'ened with the shank stiffener 16. jAsdescribed in the above mentioned application by Ridderstrom, there is a tendency, owing-to the firm gripping action of the feeding instrumentalities, for the sole to wedge in between the elements of the feeding mechanism, re-

suiting either in stopping the operation. of the machine, or in injuring-the outsole or the machineparts.

According to the present invention, this tendencyis. overcome by mounting concentrically with the feed wheel 8, adjacent thereto and in side-by-side relation therewith, a" second feed wheel 22 constituted of yielding material, like rubber.

The feedwheelof the machine of the present invention is thus constituted of the two feed-wheel sections 8 ,and. 22..

The feed wheel 22 may be of varying" thickness,dependent upon the dimensions of the shank of thesole, and its position upon v 100 exerted bythe wiper wing in pressing back the channel lip shall lie along a "line L, Fig.J1, parallellto the feed wheela22 and the machine; should be'sueh that'the force midway between its faces. It therefore becomes necessary to mount the feed wheel 8 fartherto the left, asqviewed in Fig. 1, than is the case in the above-referred-to Stanbon patent. The feed wheels may be inclinedly mounted upon a rotatable, inclined shaft 24.

so as to rotate as a unit, by a screw 26 and a pin 28, the latter being shown as passing through opening in the feed wheel 8 and embedded in the feed wheel 22. The periphery of the feed wheel 22 may be conically inclined, so to render its uppermost portion 30 more nearly horizontal, thereby providing for a larger bearing surface and a more uniform gripping action upon the steel shank 16. Better cooperation is thus furthermore secured with the inclined wiper wings. A washer 32, of diameter less than thediameter of the smaller face of the feed wheel 22, acts to prevent spreading of the material of which the feed wheel 22 is constituted.

In operation, the feed wheel 22 yieldingly grips the shank 16 and the feed wheel 8 firmly grips an adjacent edge portion of the sole, the other face of the sole being firmly gripped: by the presscr foot and the wiper. The feed wheels are rotated by power transmitted tothe shaft 24 As the sole is thus advanced by th feed wheels, the channel-lip isopened, turned over and pressed back by the wiper. ()wing to the yielding action of the feed wheel 22, the machine can not become clogged up, but continues to operate smoothly and without injury to the sole or to the machine. furthermore, in simple fashion and without the jostling lateral bodily movement of the yielding feed wheel which characterizes the above1nent1oned lildderstrom machine, and

the presentinachine can be manufactured much more economically. The frictional qualities of rubber, moreover, render this material superior to metal for feeding purposes.

The invention havingbeen thus described, what is claimed as new is:

1. A feed mechanism having, in combination, two feed-wheel sections secured together in side-by-side relation, one of the feed wheel' sections being constituted of rubber, the periphery of the rubber feedwheel section being cone-shaped with the wallsof the cone conver ing away frointhe other feed-wheel section, and means for securingvthe rubber feed-wheel section to the other feed-wheel section.

2. A channel-lip-turning machine having,

incombination, a wiper, means for feeding a shank-stiffened sole to the wiper comprising two feed-wheel sections disposed in side-byside relation and rotatable about an axis, one of the feed-wheel sections being constituted-of yieldingmaterial'and adapted to.

This result is attained,

yieldingly grip the shank stiffener, and the other feed-wheel section being adapted to firmly grip an adjacent portion of the sole, means co-operating Jvith the feeding .means to grip the sole, and means for operating the feeding means.

3. A. channel-lipturning machine having, in combination, a rotatable Wiper, means for feeding shank-stiffened sole to the Wiper comprising two feed-wheel sections inclinedly disposed to the wiper in side-by-side relation and rotatable about an axis, one of the feedwrheel sections being constituted of yielding material and adapted to yieldingly grip the shank stiffener, and the other feedwheel section being adapted to firmly grip an acent portion of the sole, the periphery of the first-named feed-wheel sectionbeing cone-shaped withthe walls of the cone converging away from the secondnamed feed-wheel section, means for preventing spreading of the yielding material of the first-named feed-wheel section, the feed wheel sections being positioned so that the force enertedby the wiper shall lie along a line substantially parallel to the firstnamed feed-wheel section and inidway betweenits faces, means co-operating with the feeding means to grip the sole, and means foropcrating the feeding means.

l. A machine of the class described having, in combination, operating means, and means for feeding to the operating means material to be" operated upon, the feeding means comprising two feed-wheel sections disposed in side-by-side relation and rotatable about an axis, one of the feed-wheel sections being constituted of non-yielding material, andthe other feed-wheel section being constituted of yieldingmaterial, the feedwheel sections being positioned so that the forcee-Xerted by, the operating means shall lie along a line passing through the feedwheel section of yielding material.

5. channel-lip-turning machine having, in combination, a wiper, a feed wheel for feeding a shank-stiffened sole to the wiper iaving a portion constituted of non-yielding material adapted to firmly grip a portion of the sole adjacenttothe shank stiffener and a portion constituted of yielding material adapted to yieldingly grip the shank stiffener,'and means for operating the feed wheel. I w

in testimony whereof, I have hereunto subscribed my name this 15th:day of-March,

, ononen COLEMAN. 

